The RMS-141 Xeku Eins (Type 3 Armament) is a heavy attack version of the Xeku Eins. Originally intended for attacking and defending space fortresses, this type is armed mainly with projectile weapons. Its main weapon is a large 120mm machine gun with a rate of fire of 360-540 rounds per minute, and it carries roughly 6,000 rounds of ammunition in each of the huge drum magazines attached to its shoulders. The mobile suit is also equipped with a pair of shields that connect to the movable frame mounts in its shoulders, and these shields in turn provide beam saber racks and latches for optional equipment such as clay bazookas, bazooka magazines, and smoke dischargers. This is effectively the standard configuration of the Xeku Eins. The pilots of the instructor corps use this version to wipe out the regular Federation Forces mobile suits stationed at Pezun, and after declaring themselves the New Desides, they continue using it throughout the Pezun Rebellion of UC 0088.